Influence of iron nanoparticles (Fe3O4 and Fe2O3) on the growth, photosynthesis and antioxidant balance of wheat plants (Triticum aestivum)

Vladimir Kreslavski,Alexander Shmarev,Alexandra Khudyakova,Anatoly Ivanov,Anatoly Kosobryukhov,O.Y Patlasov

doi:10.1051/bioconf/20224201023

Vladimir Kreslavski, Alexander Shmarev + Show 4 more

Open Access

https://doi.org/10.1051/bioconf/20224201023

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Abstract

More and more attention is paid to the development of technologies using iron nanoparticles in agriculture. In this regard, the effect of treatment of wheat seeds with various concentrations of iron nanoparticles Fe3O4 and Fe2O3 on the accumulation of biomass, the rate of photosynthesis and respiration, as well as on photochemical activity and antioxidant balance was studied. The seeds were treated for 3 h, germinated for 2 days in Petri dishes, transplanted into sand and grown under light for 18 days without mineral nutrition until the third leaf appeared. At a Fe3O4 concentration of 200 mg L-1 a significant increase in the dry biomass of the second leaf by 45% and the rate of photosynthesis by 16% was observed. At a concentration of nanoparticles in the form of Fe2O3 of 200 and 500 mg L-1, an increase in the rate of photosynthesis in the second leaf was also observed, but not in the biomass of the leaves. The activity of photosystem 2, estimated from the Fv/Fm value, also increased in experiments with nanoiron. However, the activity of antioxidant enzymes, guaiacol-dependent peroxidase and superoxide dismutase, decreased. It is assumed that the acceleration of growth at an early stage of wheat development is associated with an increase in photosynthetic processes.

Highlights

In the last decade, nanoparticles (NPs), that is, particles less than 100 nm in size, have been widely used in various areas of the national economy, including medicine, for water purification and in the food industry
More and more attention has been paid to the study of the ways of action of NPs of various metals, in particular, in the form of iron oxide in order to increase the productivity of plants, as well as reduce the environmental risk of using fertilizers [1,2,3]
In work [5], an increase in dry biomass, protein content and the number of pods was shown in comparison with the control

Summary

Introduction

Nanoparticles (NPs), that is, particles less than 100 nm in size, have been widely used in various areas of the national economy, including medicine, for water purification and in the food industry. In agriculture, the use of nanoparticles has not been studied enough so far. More and more attention has been paid to the study of the ways of action of NPs of various metals, in particular, in the form of iron oxide in order to increase the productivity of plants, as well as reduce the environmental risk of using fertilizers [1,2,3]. The effect of nanomaterials largely depends on the method of their introduction. [4] showed that plant growth depends on the method of using nanomaterials. The use of Fe3O4 nanoparticles significantly increased the growth and yield of pea plants by increasing the leaf area. In work [5], an increase in dry biomass, protein content and the number of pods was shown in comparison with the control

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